PT-2018-04: Sensitive Information Disclosure in Siemens SIPROTEC 4 and SIPROTEC Compact relays

(PT-2018-04) Positive Technologies Security Advisory
Sensitive Information Disclosure in Siemens SIPROTEC 4 and SIPROTEC Compact relays

Vulnerable products

SIPROTEC 4 7SJ66
Version: 4.29 and earlier
SIPROTEC Compact 7SJ80
Version: 4.76 and earlier
SIPROTEC Compact 7SK80
Version: 4.76 and earlier
Other SIPROTEC Compact relays
Version: all vesions
Other SIPROTEC 4 relays
Version: all vesions

Link:
https://www.siemens.com/

Severity level

Severity level: High
Impact: Sensitive Information Disclosure
Access Vector: Remote

CVSS v3:
Base Score: 9.0
Vector: (AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)

CVE: CVE-2018-4839

Vulnerability description

The specialists of the Positive Research center have detected a Sensitive Information Disclosure vulnerability in Siemens SIPROTEC 4 and SIPROTEC Compact relays.

Vulnerability allows unauthenticated remote, low-skilled attackers to upload a modified device configuration overwriting access authorization passwords, and obtain full control over the device.

How to fix

Update firmware to the latest version or use the vendor's recommendations

Advisory status

17.12.2015 - Vendor gets vulnerability details
08.03.2018 - Vendor releases fixed version and details
30.03.2018 - Public disclosure

Credits

The vulnerability was detected by Ilya Karpov and Dmitry Sklyarov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2018-04
https://ics-cert.us-cert.gov/advisories/ICSA-18-067-01
https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf

Reports on the vulnerabilities previously discovered by Positive Research:

https://www.ptsecurity.com/
https://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit www.ptsecurity.com

*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+